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38 lines
1.7 KiB
Markdown
38 lines
1.7 KiB
Markdown
# 6.1.29 pwn Insomni'hack_teaserCTF2017 The_Great_Escape_part-3
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- [题目复现](#题目复现)
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- [题目解析](#题目解析)
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- [漏洞利用](#漏洞利用)
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- [参考资料](#参考资料)
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[下载文件](../src/writeup/6.1.29_pwn_insomnictf2017_the_great_escape3)
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## 题目复现
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```
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$ file the_great_escape_part3
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the_great_escape_part3: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=08df0c3369b497ee8ed8fca10dbb39ae75ebb273, not stripped
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$ checksec -f the_great_escape_part3
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RELRO STACK CANARY NX PIE RPATH RUNPATH FORTIFY Fortified Fortifiable FILE
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Partial RELRO Canary found NX enabled No PIE RPATH No RUNPATH Yes 0 6 the_great_escape_part3
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$ ldd the_great_escape_part3
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linux-vdso.so.1 (0x00007ffe0f1e8000)
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libjemalloc.so.2 => /usr/lib/libjemalloc.so.2 (0x00007fa5e82dd000)
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libc.so.6 => /usr/lib/libc.so.6 (0x00007fa5e7f21000)
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libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007fa5e7b98000)
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libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007fa5e797a000)
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libdl.so.2 => /usr/lib/libdl.so.2 (0x00007fa5e7776000)
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libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007fa5e755e000)
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/lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2 (0x00007fa5e875c000)
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libm.so.6 => /usr/lib/libm.so.6 (0x00007fa5e71c9000)
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```
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64 位动态链接程序，但其使用 jemalloc 替代了 glibc 里的 ptmalloc2，很有意思。关于 jemalloc 的更多内容可以参考章节 1.5.11。
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## 题目解析
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## 漏洞利用
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## 参考资料
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- https://ctftime.org/task/3311
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